From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] arm/mvebu: sync barebox-arm-head.h to generic variant
Date: Thu, 5 Aug 2021 17:22:17 +0200 [thread overview]
Message-ID: <20210805152218.1901918-1-u.kleine-koenig@pengutronix.de> (raw)
En passant this adds support for PBL_BREAK. While there is no 64 bit
support available for mvebu, keeping the difference between
arch/arm/mach-mvebu/include/mach/barebox-arm-head.h and
arch/arm/include/asm/barebox-arm-head.h minimal is a good thing.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Changes in this v2: Only some whitespace changes to reduce the diff
between the two headers even more.
---
.../include/mach/barebox-arm-head.h | 25 ++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-mvebu/include/mach/barebox-arm-head.h b/arch/arm/mach-mvebu/include/mach/barebox-arm-head.h
index 3035f40ddf3b..723e2ab4c8b5 100644
--- a/arch/arm/mach-mvebu/include/mach/barebox-arm-head.h
+++ b/arch/arm/mach-mvebu/include/mach/barebox-arm-head.h
@@ -4,6 +4,7 @@
static inline void __barebox_arm_head(void)
{
__asm__ __volatile__ (
+#ifdef CONFIG_CPU_32
#ifdef CONFIG_THUMB2_BAREBOX
".arm\n"
"adr r9, 1f + 1\n"
@@ -23,11 +24,23 @@ static inline void __barebox_arm_head(void)
"1: b 1b\n"
"1: b 1b\n"
"1: b 1b\n"
+#endif
+#else
+ "b 2f\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
#endif
".asciz \"barebox\"\n"
+#ifdef CONFIG_CPU_32
".word _text\n" /* text base. If copied there,
* barebox can skip relocation
*/
+#else
+ ".word 0xffffffff\n"
+#endif
".word _barebox_image_size\n" /* image size to copy */
/*
@@ -42,9 +55,19 @@ static inline void __barebox_arm_head(void)
".word 0x55555555\n"
".endr\n"
"2:\n"
+#ifdef CONFIG_PBL_BREAK
+#ifdef CONFIG_CPU_V8
+ "brk #17\n"
+#else
+ "bkpt #17\n"
+#endif
+ "nop\n"
+#else
+ "nop\n"
+ "nop\n"
+#endif
);
}
-
static inline void barebox_arm_head(void)
{
__barebox_arm_head();
base-commit: 72424fd057d135ec0e41139fe4cb5740471d33a5
--
2.30.2
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next reply other threads:[~2021-08-05 15:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 15:22 Uwe Kleine-König [this message]
2021-08-05 15:22 ` [PATCH 2/2] arm: mxs: Replace license and copyright boilerplate by SPDX identifiers Uwe Kleine-König
2021-08-06 8:40 ` [PATCH 1/2] arm/mvebu: sync barebox-arm-head.h to generic variant Uwe Kleine-König
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